Why it matters
It was the step that made inner experience something science could put a number on.
Core term · Gustav Fechner
Psychophysics
The measured relationship between a physical stimulus outside and the sensation it produces inside.
Areas of life
Perceptionmeasurementthe senses
How to handle it
Notice that experience tracks ratios, not absolute amounts.
Who shaped this idea
The thinker behind it
From concept to practice
Turn Psychophysics into a question you can answer.
Psipas asks you one small, honest question at a time — and builds the picture from your answers.